Characterization of bacterial community of rumen from bovine during laminitis challenge by high-throughput sequencing

Abstract Background: Laminitis is a classic problem in the dairy industry, which can cause a great economic loss. However, the etiology and pathogenesis of laminitis have yet to be understood. In recent years, the microbiota has been the focus of much investigation in the search for various diseases. The present study aimed to explore the relationship between ruminal bacterial microbiota and laminitis. Results: The serum of healthy and laminitis bovines (n=8, respectively) collected from farms was used to detect concentrations of LPS, lactic acid, and histamine by the detection kits. This study used 16S rRNA sequencing to identify the differences in the bacterial community. The results showed that there was a significant increase in LPS and lactic acid in the laminitis group. Furthermore, microbial data analysis revealed that the laminitis group increased the abundance of bacteria with acid metabolites, such as Candidatus Saccharimonas, Saccharofermentans, Erysipelotrichaceae UCG-009, and Erysipelotrichaceae UCG-008, and [Clostridium] papyrosolvens and Ruminococcaceae bacterium AE2021.Conclusions: In summary, the changes in ruminal bacteria may potentially serve as the risk of laminitis.